Source seems to be a dead link...Jvpnox (留言) 18:29, 14 April 2020 (UTC)[回复]
Re-used in https://www.achgut.com/artikel/bayreuth_ende_eines_mythos, https://www.achgut.com/artikel/bayreuth_ist_wagner_noch_zu_retten_2 and https://www.achgut.com/artikel/bayreuth_ist_wagner_noch_zu_retten_1
